I experienced sleep walking on Ambien, which is something that is somewhat common. I've heard of people sleep eating, sleep driving, and sleep walking halfway down the street while on it. I was put on it in the hospital, and the doc took me off once they saw that I was sleep walking. That side effect usually gets worse over time, so if I had stayed on it, I could have done the other things. They took me off it while I was still in the hospital.